<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8" />
		<title></title>
		<style>
			.box{
				width: 500px;
				background-color: pink;
				overflow: hidden;
			}
			.left{
				background-color: aqua;
				height: 300px;
				width: 200px;
				float: left;
			}
			.right{
				background-color: aquamarine;
				width: 200px;
				height: 300px;
				float: right;
			}
		</style>
	</head>
	<body>
		<div class="box">
		<div class="left">青龙</div>
		<div class="right">白虎</div>
		</div>
	</body>
</html>
